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Date: Wed, 25 Oct 2023 14:48:50 -0300
From: Arnaldo Carvalho de Melo <acme@kernel.org>
To: Alan Maguire <alan.maguire@oracle.com>
Cc: andrii.nakryiko@gmail.com, jolsa@kernel.org, ast@kernel.org,
	daniel@iogearbox.net, eddyz87@gmail.com, martin.lau@linux.dev,
	song@kernel.org, yhs@fb.com, john.fastabend@gmail.com,
	kpsingh@kernel.org, sdf@google.com, haoluo@google.com,
	mykolal@fb.com, bpf@vger.kernel.org
Subject: Re: [PATCH v4 dwarves 0/5] pahole, btf_encoder: support
 --btf_features
Message-ID: <ZTlVAtFw7oKaFrvl@kernel.org>
References: <20231023095726.1179529-1-alan.maguire@oracle.com>
 <ZTlTpYYVoYL0fls7@kernel.org>
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Em Wed, Oct 25, 2023 at 02:43:02PM -0300, Arnaldo Carvalho de Melo escreveu:
> But 'bpftool bpf' doesn't like it:
 
>   $ bpftool btf dump file vmlinux.v5.19.0-rc5+.enum64 raw
>   Error: failed to load BTF from vmlinux.v5.19.0-rc5+.enum64: Invalid argument
>   $
 
> But it doesn't like it even when not using --btf_features :-\
> 
>   $ cp vmlinux.v5.19.0-rc5+ vmlinux.v5.19.0-rc5+.default_btf_encode ; pahole --btf_encode vmlinux.v5.19.0-rc5+.default_btf_encode
>   $ bpftool btf dump file vmlinux.v5.19.0-rc5+.default_btf_encode raw | wc -l
>   Error: failed to load BTF from vmlinux.v5.19.0-rc5+.default_btf_encode: Invalid argument
>   0
>   $ 
 
> I'll try to root cause this problem...

Random old bpftool on this notebook was the cause, nevermind, I'm back
testing this, sorry for the noise :-)

- Arnaldo